Discussion of Different Model Approaches for the Flow Behavior of Ice
Discussion of Different Model Approaches for the Flow Behavior of Ice
复制标题
冰流动行为不同模型方法的讨论
DOI：
10.1002/pamm.201610145
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Humbert
中科院分区：
文献类型：
--
作者：
Christmann;Rückamp;Müller;Humbert
南极冰架的冰被假设为长期不可压缩粘性流体，在短时间尺度上由弹性响应主导。因此，需要粘弹性材料模型。在弹性和粘性模型中，热力学压力被不同地处理。对于小变形，弹性等轴应力在ν → 0.5时给出的结果与不可压缩层流模型中求解压力的结果相似。一个粘性模型，其中的热力学压力近似为一个弹性的等距应力，可以很容易地扩展到粘弹性。（© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
Ice of Antarctic ice shelves is assumed to behave on long‐term as an incompressible viscous fluid, which is dominated on short time scales by the elastic response. Hence, a viscoelastic material model is required. The thermodynamic pressure is treated differently in elastic and viscous models. For small deformations, the elastic isometric stress for ν → 0.5 gives similar results to those solving for pressure in an incompressible laminar flow model. A viscous model, in which the thermodynamic pressure is approximated by an elastic isometric stress, can be easily extended to viscoelasticity. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
南极冰架崩解前沿的粘性和粘弹性应力状态
影响因子：
2.9
作者：
Christmann;Müller;Humbert
通讯作者：
Humbert